package com.sogou.adm.bizdev.dataimport.web;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.Preparable;

public abstract class BaseAction<T> extends ActionSupport implements ModelDriven<T>, Preparable {
	/**
	 * 进行增删改操作后,以redirect方式重新打开action默认页的result名.
	 */
	public static final String RELOAD = "reload";

	protected final Logger logger = LoggerFactory.getLogger(getClass());

	/**
	 * Action函数,默认action函数，默认指向list函数.
	 */
	@Override
	public String execute() throws Exception {
		return list();
	}

	// CRUD函数 //

	/**
	 * Action函数,显示Entity列表.
	 * 建议return SUCCESS.
	 */
	public abstract String list() throws Exception;

	/**
	 * Action函数,新增或修改Entity. 
	 * 建议return RELOAD.
	 */
	public abstract String save() throws Exception;


	// Preparable函数 //

	/**
	 * 实现空的prepare()函数,屏蔽所有Action函数公共的二次绑定.
	 */
	public void prepare() throws Exception {
	}

	/**
	 * 在save()前执行二次绑定.
	 */
	public void prepareSave() throws Exception {
		prepareModel();
	}

	/**
	 * 在input()前执行二次绑定.
	 */
	public void prepareInput() throws Exception {
		prepareModel();
	}

	/**
	 * 等同于prepare()的内部函数,供prepardMethodName()函数调用. 
	 */
	protected abstract void prepareModel() throws Exception;
}
